Insulator.



W. R. MARKLBY.

INSULATOR.

. 911. 1,021,059, Patented Mar. 26, 1912.

WILLIS R. MARKLEY, OF FINDLAY, OHIO.

INSULATOR.

Specification oi Letters Patent.

- Patented Mar-.26, 1912.

Application filed January 4-, 1911. Serial No. 6G0,76?.

'1 b all whom it may concern Be it known that I, \ViLLis R. MARKLiiY, a citizen of the United States, residing at Findlay. in the county of Hancock and State of Ohio, have invented a new and useful Insulator, of which the following is I. specification.

it is the object of the present invention to provide an improved insulator for electrical conductors and more particularly in that of such insulators which are formed of porcelain or other similar insulating material and in two sections between which the wires of other electrical conductors are clamped by a screw or bolt serving also as a means for securing the sections in assembled relation to a support. Insulators of this type are usually formed with flat ends which are designed to be disposed against the support to which the insulator is attached and unless the support is plane upon its face against which the insulator is disposed, the insulator is liable to not set firmly against the support; and in time will either work loose or will become broken by the constaht strain exerted upon it.

One aim of the present invention isto therefore construct the insulator at its ends of such form that the ends will seat firmly against an uneven support as well as an even or plane one.

As before stated insulators of this type are formed of sections secured together by the same screw or bolt which secures them in assembled relation to the support and con sequently, the sections are formed with alined re istering openings through which the said securing bolt or screw is fast. l urthermore, the faces of the insulator sections which are disposed together in assembling the sections, are inclined to the axis of the device, and a further aim of the invention is to reinforce the edges of the openings in the sections at these faces by the formation upon the sections of bosses and seats oppositely located so that when the sections are assembled, the boss of one section will rest in the seat in the other section.

in the accompanying drawings, Figure l is a view in side elevation of the insulator embodying the present invention. Fig. 2 is a vertical transverse sectional view therethrough. Fig. 3 is a horizontal sectional view on the line 3 3 of Fig. 2. Fig. 4 is a )lan view of one. of the sections of the IIISUlDtOI'.

As heretofore stated, the insulator embodying the present invention consists of two sections and as these sectioi'is are counterpart in construction and form, a description of one will suffice for both. Each section is substantially undulate in form and is indicated by the numeral 5. For a purpose to be presently explained, the base of each member is formed with an annular depending shallow flange 6 molded integral with the body of the section. Also, each section is formed axially with a bore 7 and at that end which opens through the base of -the section, the respective bore 7 is widened to receive the head of a securing screw or bolt 8 designed to be engaged through the bores 7 of the tvo sect-ions when they are properly fitted together and to be screwed into a support 9 which may be a board, strip or in fact. any other wooden element. The inclined face of the sections is, at its end remote from the base of the undulate section, flattened at El and at its opposite end is flattened as at 10. Between these flattened portions, the inclined face of the section is substantially plane. portion of the said face of the section is formed with a transversel extending substantially Vehaped groove, the walls of which are serrated or roughened as is clearly Each flattened Y shown in Fig. i of the drawings. It will at this point be readily understood that in assembling the sections, the same are disposed with their inclined faces abutting and the tlattened portion 9 of the said face of one section resting against. the portion 10 of the corresponding taco of the other section, in the manner illustrated in Figs. l and 2 of the drawings. Near the portion 9' of its in clincd face, each of the sections 9 is formed with a seat or recess 1'2 the bottom wall of which is substantially crescent. shape in top plan and from the said inclined face at a correspoiullug point near the portion 10 thereof. there formed a lug 13 which is substantially crescent shaped in cross section and is designed to lit snugly in the seat 12 in the other section when the two sections are properly assembled. it will be noted that the lug 2'2 partly surrounds the end of the bore. 7 which opens through the inclined face at thesection so that the edges of the wall of this bore at its end are materially strengthened and are not liable to be chipped. It will also be understood that by forming the seats or recesses 12 with substantially creslug with seats in the recesses,

conductor becoming in any way engaged by the securing screw or bolt which holds the sections of the insulator together.

\Vhat is claimed is:

An insulator of the type described, including complemental members, each havcent shaped bottom walls and forming the I crescent shaped in cross section, the diameter of the 5 body is not materially increased although i exceptionally well reinforced. i From the foregoing description of the in- I vention it will be readily understood that the l edge of the wall of the bore 7 in each section, at that end which opens through the said inclined face of the section, is materially reinforced by forming the said face with the recesses or seats 12 and the lugs 13, the lug and recess of each section being relatively offset through opposite sides of the axis of the bore. By thus reinforcing the edge of the wall of the bore of aclinsection. chipping of this edge is-pfrevented and consequently this section will more perfectly fit together. It will be further understood that the faces of the section, or in other words the ends of the insulator as a whole, being formed with the shallow flanges 6, more readily adapt themselves to an uneven support or surface to which the device is attached than they would if formed flat as is usually the case. It will be further understood that the engagement of the lugs'l3 in the recesses 12 serves also to prevent the flat horizontal surfaces at the upper and lower terminals of said inclined face, respectively, said flat surfaces having therein transverse substantially V-shaped grooves, with roughened walls, said inclined faces also having at diagonally opposite points ('rescent-shaped recesses and also correspondingly shaped bosses, said complemental" members having alined bore-forming openings therethrough, and securing means insertible through said bore, said crescentshaped bosses and recesses being relatively o'fi'set through to the opposite sides of the axis of said bore.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

VILLTS R. M A RKLEY.

\Vitnesses:

EBER. S. Iluonns, ENociI JOHNSTON.

ing an inclined face and diagonally opposite 

